package com.gy.hadoop.mr;

import org.apache.hadoop.fs.shell.Count;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;

import java.io.IOException;

public class WordCountReduce extends Reducer<Text, LongWritable, Text, LongWritable> {


    private final LongWritable rv = new LongWritable();


    @Override
    protected void reduce(Text key, Iterable<LongWritable> values, Context context) throws IOException, InterruptedException {
        long sum = 0;
        for (LongWritable value : values) {
            sum += value.get();
        }
        rv.set(sum);
        System.out.println(key + ":" + rv);
        context.write(key, rv);
    }
}
